use std::io::Write;

use crate::repo::{self, Repository};
use crate::CurrentTaskInfo;

#[derive(clap::Args)]
pub struct Args {
    #[clap(short, long)]
    link: Option<String>,
    #[clap(long)]
    no_link: bool,

    #[clap(short, long)]
    name: Option<String>,

    idx: usize,
}

pub struct Request {
    pub args: Args,
    pub current_task_info: Option<CurrentTaskInfo>,
}

pub fn execute(repo: impl Repository, mut req: Request) {
    if req.current_task_info.is_some() {
        panic!("You can edit task only when you don't have an active task, yet");
    }

    let args = req.args;

    let res = repo.update_task(
        args.idx,
        repo::UpdateTaskData {
            name: args.name,
            link: args.no_link.then(|| None).or(args.link.map(Some)),
        },
    );
    match res {
        Ok(task) => {
            println!("The task was changed successfully");
            println!("  {}", task.name);
            if let Some(link) = task.link {
                println!("  link: {}", link);
            }
        }
        Err(err) => {
            eprintln!("Cannot update the task: {}", err);
        }
    }
}